Apparatus for debarking logs.



G. SCHENGK, J11. APPARATUS FOR DEBARKING LOGS.

APPLICATION FILED APR. 1, 1909.

9,28 Patented Mar.28,1911.

2 SHEETS-SHEET 1.

G. SOHENOK, JR. APPARATUS FOR DEBARKING LOGS.

APPLICATION FILED 'APR. 1, 1909.

Patented Mar. 28, 1911.

2 SHEETSSHBET 2.

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APPARATUS FOR DEIBARKING LOGS.

ceases.

Specification of Letters Patent.

Patented Mar. as, real.

Application filed April 1, 190's. Serial in. 487,172.

To all whom it may concern:

Be it known that I, GARRET SoHnNoK, J r.,

.a citizen of the United States, and resident of Millinocket, in thecounty of Penobscot and State of Maine, have invented. certain new anduseful Improvements in Apparatus for Debarking Logs, of which thefollowing is a specification.

My invention relates to debarking or rossing machines, and consists ofmeans whereby to effectually feed the logs past the rossing head whilerotatin the same, and in features of construction 0 the parts of theapparatus together with means for discharging the logs automaticallyafter rossing, all as fully set forth hereinafter and as illustrated inthe accompanying drawing, in which:

Figure 1 is a side elevation of a debarking machine embodying myimprovement; Fig. 2 is a plan view; Fig. 3 is a plan showin one form ofrosser head; Fig. 4 a longitudlnal section of the body of therosser-head; Fig. 5 an enlarged detached view illustrating one mode ofconstructing the teeth of the rosser head; Fig. 6 shows a different formof tooth; and Fig. 7 a view illustrating a modification.

The frame A of the apparatus is constructed in any suitable manner tosupport the necessary parts of the ap aratus and has bearings for aseries of shaft parallel to each other but which are at an angle more orless acute to the side bars of the frame and to the axis of the rossinghead hereinafter referred to. Each shaft is provided with a feed roll Band the feed rolls adjacent to the rossing head, that is, those whichboth precede and succeed the latter, have flanges 3 at the ends adjacentthe ross-' ing head, which flanges are preferably flaring or cone-like,as shown, and while the rolls and their flanges may be plain or merelyserrated they are preferably provided with lugs or projections 4, whichwill enable them to take strong hold of the logs which are placed uponthem to be fed longitudinally of the frame past the rossing head.

Owing to the inclination of the rolls the logs carried thereby tend notonly to travel longitudinally but also to move laterally toward theflanged ends of the rolls and the contact of these flan es with thesides of the logs so acts u on t e latter that they are s 2, which aremoved longitudinall but rotatively, whereby all portions of t e logs aresubjected to the rossing action, and this result is insured by providingthe projecting lugs upon the feed rolls as before set forth. Those feedrolls which are beyond the rolls which must act upon the 10 to rotatethe same are not provided with anges but are inclined in the same manneras the first rolls, and in order that the logs may remain upon'thelatter rolls until they have passed wholly from the flanged rolls, Iprovide any suitable character of guard or guards which will hold them1n place and which may be shifted to ermit the rolls to be dischargedlaterally.

his shifting of the guards may be effected automatically through themedium of a contact device J supported by the frame and in position tobe struck by the forward end of the log when the latter has traveledsufliciently to be discharged, said contact device being connected withthe guards to shift the same. As shown the guards consist of blades Dpivoted to one of the side frames of the apparatus and each connected bya link 6 with a bar 7 which is attached at its forward end to thecontact device J so that when the latter is swung, by the contact of alog in the direction of its arrow all of the guards will be carrieddownward and away from the side of the log which will then roll ofl thefeed rolls to an suitable receptacle. A spring 5, after the 0g passesfrom the contact device J, restores the latter and the guards to normalposition.

The shafts of the feed rolls may be 'driven in any suitable manner, butas shown are provided with beveled gears for engaging correspondinggears on a driving shaft 8.

The rossing head maybe constructed in different ways, but as shown thereare two heads C upon a single shaft carried by a swinging frame Kpivoted at one side of the frame so as to swing to and from the latterto carry the rossing heads to and from the path of the logs, and at thecenter of the shaft is a belt pulley or cylinder 10 adapted to receive adriving belt by which the rossing head or heads may be rotated. As showneach rossing head has a cylinder with teeth 12 projecting beyond theperiphery thereof and so supported that they will yield with a springaction on striking the bark, the result being that a tooth upon firststriking the bark is carried in a reverse direction from the rotation ofthe head, but upon the bark yielding the tooth will spring forward andact percussively on other portions of the bark with a much moreeffective result than if the tooth was stationary. The teeth may besupported to secure such a. spring action in various ways, but as shownthe body of the rossing head is a slotted cylinder through the slots ofwhich the teeth may extend and each of which consists of a spring metal,as for instance round spring wire, which is supported by being coiledaround a long tudinal bar 13 extending through the cylinder, or isotherwise so held that the projectrn r toothed end of the strip ismaintained wlti a spring pressure against one end of one of the slots. Asimple and ell'ective means of securing this result is to extend theother end of the stri also through one of the slots, or the same slot.and bend it down against the face of the cylinder. as best shown in Fig.5. The rods 13 may be solid or hollow and extend through hearings in theheads 14 of the cylinder and are held in place by nuts at the end, orotherwise, as may be most desirable. The rossing head instead of beingcarried by a swinging frame K may be carried by a sliding frame, and anysuitable means may be en'iployed for carrying the frame to and from thepath of the logs to be operated upon.

W'hile T have shown the feed rolls as provided with flanges or heads 3forming part. of the rolls this is not an absolutely necessaryconstruction as the heads or flanges may be independent of thecylindrical portions of the rolls and may be independently driven, asfor instance, as illustrated in Fig. 7 where the cylindrical portion ofthe roll is secured to the shaft. 2, and the head 01' flange 3 turnsupon the said shaft and is provided with a gear 22 which may be drivenfrom a suitable spur Wheel. In Fig. 6 I have illustrated a somewhatdifferent form of spring tooth Where the projecting end is bent back andserrated so as to act with a rasping effeet.

The operation of the machine hereinbefore described briefly stated is asfollows 2- The logs from which it is desired to remove bark are placedupon the feed rolls at the right. hand end of the machine, and owing tothe inclination of the roll supporting shafts and the arrangement of theteeth on such rolls the log will be fed both longitudinally and towardthe side of the machine adjacent which the rossing head is mounted.While all of the rolls B are thus adapted to feed a log bothlongitudinally and laterally, the rolls immediately adjacent the rossinghead are additionally provided with means, such as the toothed flanges3, by which the log engaged thereby is not only moved longitudinal y andlaterally as aforesaid, but. in addition is rotated so that e'veryportion of the surface thereof is presented to the rossing head. Afterpassing the rossing head the log is given no further rotary movement andthe lateral movement thereof is checked by the upright guards until thelongitudinal movement of the log brings it into engagement With thecontact device J and causes the latter to move outwardly, thus loweringthe guards D and ermitting the rolls B to feed the log laterally overthe side of the machine.

Without limiting myself to the construction shown, I claim:

1. In a debarking machine, the combination with a stationary frame, of aseries of rotatable cylindrical parallel toothed rolls, each roll havinga flaring toothed flange, the said rolls being arranged and adapted tofeed a log both longitudinally of the frame and laterally against saidflanges, and said flanges being adapted to rotate the log about itsaxis, of a rossing device mounted adjacent to the flanged ends of saidrolls and adapted to debark the logs as they are transported and turnedbythe rolls.

2. The combination in a debarking machine, of a series of feed rollsadapted to simultaneously feed a log longitudinally and laterally, arossing head adjacent one end of a plurality of said rolls, the latterbeing constructed to rotate a log engaged thereby while feeding it asdescribed, guards for limiting the lateral movement imparted to a log bythe feed rolls at one side-of'the rossing head, and means forautomatically shifting said guards to permit a log to be discharged fromthe machine after passing the rossing head.

3. The combination in a debarking machine, of a suitable frame, a rossinhead at one side of the frame, a series of: eed rolls adapted to feed alog longitudinally and laterally toward the side of the frame adjacentthe rossing head, means for limiting the lateral movement of a log afterpassin the rossing head, and means for automatlcally moving saidlimiting means to inoperative position.

4. The combination in a debarking machine, of a suitable frame, a rossinhead at one side of the frame, a series of cod rolls adapted to feed alog longitudinally and laterally toward the side of the frame adjacentthe rossing head, means for limiting the lat-.

eral movement of a log after passing the rossing head, and means adaptedto be actuated by the longitudinal movement of a log for moving saidlimiting means to inoperative position.

5. The combination in a debarkin machine of a frame carrying a series 0feed rolls inclined as set forth, a portion of said rolls having endflanges, a rossing head arranged adjacent to the flanged rolls, guardsarranged adjacent to the rolls without flanges and acting to limit thelateral movebe automatically discharged from the ma chine.

6. The combination in a debarking machine of a frame carrying a seriesof feed rolls inclined as set forth, a portion of said rolls having endflanges, a rossing head arranged adjacent to the flanged rolls, uardsarranged adjacent to the rolls without flanges, to limit lateralmovement of a log in the di rection of the rossing head, and a contactdevice adapted to be engaged by the logs for shifting said guards out ofposition when a log passes beyond the flanged rolls to permit the logsto be automatically discharged.

7. The combination with the log support of a debarking apparatus, of arotatable rossing head provided with spring teeth that are supportedwithin and project laterally through slots in the head as set forth.

8. The within described rossing head having a hollow slotted cylinder,and yieldingly supported teeth extending through said slots.

9. A rossing head having a cylindrical body with slots therein, teethprojecting through said slots, and means for carrying each tooth with aspring pressure to one end of the slot through which it projects.

10. The combination in a rossing head of a slotted cylinder, a series ofbars supported within the cylinder, and spring teeth each consisting ofa strip of resilient metal coiled slots.

about one' of the bars and projecting through one of the slots. r

11. The combination in a rossing head of a slotted cylinder, a series ofbars'supported within the cylinder, and spring teeth each consisting ofa strip of resilient metal coiled about one of the bars and projectingat both ends through one.of the slots, one of the ends projectingoutward beyond the other. 8 12. The combination in a rossing head of aslotted cylinder, heads provided with bear ings for a series of parallelrods, and teeth,

each consisting of a strip of spring metal coiled about one of the barsand having a curved end projecting through one of the 13. Thecombination in a rossing head of a slotted cylinder, heads provided withbearings for a series of parallel rods, and teeth each consisting of astrip of spring metal coiled about one' of the bars and having a curvedend projecting through one of the slots, the other end also projectingthrough the slot and bent to engage the end of the said slot.

' 14. The combination with the rosser head of a spring'tooth providedwith teeth as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

GARRET SOHENCK, J R. Witnesses:

CATHARINE L. SoImNcK, FLORENCE L. SNARE.

